I'm on a file folder kick. I googled file folder games and tons of sights popped up, but I weeded through them and found some of the best one's available. Here are some great site's with free games.
File Folder Fun: Lot's available here! You can search by theme or by age.
Giggly Games: This link will take you to the freebie page, which has some awesome games. Including the one pictured above. They also have some great ones you can buy for cheap.
Child Care Land: This is a goldmine of goodies! Lots to choose from.
Check out this previous post, full of great links and ideas for recycling workbooks.